Swelling rubber water-stop utilizes high elasticity and compressibility of rubber to deform its elastomer body under various kinds of loads to fasten and seal&comma; prevent building's leakage and seepage effectively&period; And it can act as buffer to absorb shock&period; Because of discontinuous construction and foundation distortion&comma; there have to be some construction gap&comma; subsidence gap and distortion gap etc in many project constructions&period; Therefore the water stop belt must be applied in these gaps against water leakage problems&period;Features&colon;1&period; The rubber water stop strip will expand when getting in touch with water&comma; so allowing it to come into closer contact with the concrete&comma; creating a better water-stop result&period;2&period; Different thicknesses structure is adopted for the cross section&comma; which is divided into the high-strength area&comma; the waterproof area and the installation area&comma; allowing for uniform and reasonable stress for all portions&period;3&period; At installation area add installing hole&comma; it could facilitate fixed with adjacent reinforced&comma; and not produce shifting&period; Construction is convenient&comma; positioning installation is stable&period;